ATLANTA -- The Center for Investigative Action, an Atlanta news team, says it has found evidence that FEMA trailers contaminated with high levels of formaldehyde are again being used for housing, despite government assurances that they would not.

The CIA, as it calls itself, recently attended an auction in Calhoun in North Georgia, where 400 FEMA trailers were sold. Although they were marked "not to be used for house," the news team says it believes many Katrina trailers are back in the Gulf area being used to house oil spill cleanup workers.

Mobile, Alabama's Cahaba Disaster Recovery bought several trailers for 45 of its workers doing oil spill cleanup in the Gulf, the CIA reported, but the company said when it learned about the problems, "We got rid of all of them."